The right-hand sidebar of orders (seen at admin/commerce/orders/xxx) is hardcoded in modules/order/templates/commerce-order--admin.html.twig:
{% if order.billing_information %}
<details open>
<summary role="button">
{{ 'Billing information'|t }}
</summary>
<div class="details-wrapper">
{{ order.billing_information }}
</div>
</details>
{% endif %}
... etc
It would be really useful if other modules could add to this, e.g. Commerce Recurring could add details to say show the subscription and original order for a recurring order.
Needs review
2.0
Order
The change is currently missing an automated test that fails when run with the original code, and succeeds when the bug has been fixed.
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
seven CSS classes referenced in the old patch is called claro now.
hm... Basically this is about outputting "regions", that aren't set anywhere besides custom code? Since this requires custom code to be written, why not just overridding the template in this case? I guess to just benefit from potential changes to the order template? Feels weird to inject variables that we aren't setting anywhere.